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多孔保持架运动不稳定所引起的涡动和啸叫，是使用过程中出现的典型问题。运用稳定性理论的有关方法，建立一个分析模型，对其稳定的充分条件进行了模拟分析，得出了一些有价值的结论。附图4幅，参考文献3篇。
The vortex and whistling caused by the unstable movement of the porous cage are typical problems during use. By using the methods of stability theory, an analytical model is established and its sufficient conditions of stability are simulated and some valuable conclusions are drawn. Figure 4, reference 3.